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Add energy as a dynamic column #8574

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Apr 28, 2022
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Add energy as a dynamic column #8574

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16 changes: 12 additions & 4 deletions Framework/Core/include/Framework/AnalysisDataModel.h
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Original file line number Diff line number Diff line change
Expand Up @@ -135,12 +135,19 @@ DECLARE_SOA_DYNAMIC_COLUMN(Pz, pz, //! Momentum in z-direction in GeV/c

DECLARE_SOA_EXPRESSION_COLUMN(P, p, float, //! Momentum in Gev/c
0.5f * (ntan(PIQuarter - 0.5f * natan(aod::track::tgl)) + 1.f / ntan(PIQuarter - 0.5f * natan(aod::track::tgl))) / nabs(aod::track::signed1Pt));
DECLARE_SOA_DYNAMIC_COLUMN(Energy, energy, //! Track energy, computed under the mass assumption given as input
[](float signed1Pt, float tgl, float mass) -> float {
const auto pt = 1.f / std::abs(signed1Pt);
const auto pz = pt * tgl;
const auto p = 0.5f * (tan(PIQuarter - 0.5f * atan(tgl)) + 1.f / tan(PIQuarter - 0.5f * atan(tgl))) * pt;
return sqrt(p * p + mass * mass);
});
DECLARE_SOA_DYNAMIC_COLUMN(Rapidity, rapidity, //! Track rapidity, computed under the mass assumption given as input
[](float signed1Pt, float tgl, float mass) -> float {
auto pt = 1.f / std::abs(signed1Pt);
auto pz = pt * tgl;
auto p = 0.5f * (tan(PIQuarter - 0.5f * atan(tgl)) + 1.f / tan(PIQuarter - 0.5f * atan(tgl))) * pt;
auto energy = sqrt(p * p + mass * mass);
const auto pt = 1.f / std::abs(signed1Pt);
const auto pz = pt * tgl;
const auto p = 0.5f * (tan(PIQuarter - 0.5f * atan(tgl)) + 1.f / tan(PIQuarter - 0.5f * atan(tgl))) * pt;
const auto energy = sqrt(p * p + mass * mass);
return 0.5f * log((energy + pz) / (energy - pz));
});

Expand Down Expand Up @@ -282,6 +289,7 @@ DECLARE_SOA_TABLE_FULL(StoredTracks, "Tracks", "AOD", "TRACK", //! On disk versi
track::Px<track::Signed1Pt, track::Snp, track::Alpha>,
track::Py<track::Signed1Pt, track::Snp, track::Alpha>,
track::Pz<track::Signed1Pt, track::Tgl>,
track::Energy<track::Signed1Pt, track::Tgl>,
track::Rapidity<track::Signed1Pt, track::Tgl>,
track::Sign<track::Signed1Pt>);

Expand Down